Dual-layer case for smartphone



FIG. 1 is a front view of a “dual-layer case for smartphone” showing my design;

FIG. 2 is a back view thereof;

FIG. 3 is a right view thereof;

FIG. 4 is a left view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a front perspective view thereof;

FIG. 8 is a back perspective view thereof;

FIG. 9 is a front exploded view thereof; and,

FIG. 10 is a back exploded view thereof. 

CLAIM The ornamental design for dual-layer case for smartphone, as shown. 